// Start PLL and enable clock
void
UsbStartPLL(void)
{
UsbSetPLL_XTAL_Frequency();
UsbEnablePLL();
UsbWaitPLL_Locked();
UsbEnableClock();
}
void hcdi_init()
{
/* register virtual root hub driver */
usb_register_driver(&at90usb1287_roothub);
/* enable regulator */
UHWCON |= (1<<UVREGE);
/* force host mode */
UHWCON &= ~(1<<UIDE);
UHWCON &= ~(1<<UIMOD);
/* pll sart */
UsbSetPLL_CPU_Frequency();
UsbEnablePLL();
UsbWaitPLL_Locked();
/* Usb_disable */
USBCON &= ~(1<<USBE);
/* Usb_enable */
USBCON |= (1<<USBE);
/* unfreeze clock */
UsbEnableClock();
/* usb attach */
UDCON &= ~(1<<DETACH);
/* enable uconv pin */
UsbDisableUVCON_PinControl();
UsbEnableUID_ModeSelection();
/* select host */
USBCON |= (1<<HOST);
/* disable vbus hw control */
OTGCON |= (1<<VBUSHWC);
// 4
/* enable vbus */
OTGCON |= (1<<VBUSREQ);
UHIEN |= (1<<DDISCE);
UHIEN |= (1<<DCONNE);
UHIEN = 0xff;
}
/**
* This function is called periodical, to notice
* port changes after an hub
*/
void at90usb1287_roothub_check()
{
//USART_WriteHex(UHINT);
//UHINT = 0x00;
// disconnect
if(UHINT & 0x02) {
device_on_downstream=NULL;
#if DEBUG
core.stdout("Device: Removed!\r\n");
#endif
//UHINT &= ~(1<<DDISCI);
} else {
// if connect
if(device_on_downstream!=NULL) {
// normal transfer check for interrupt and isochonous endpoints
//USART_WriteHex(0x88);
}
// check if device is connected
else {
if(UHINT & 0x01) {
// found new device
#if DEBUG
core.stdout("Device: Found new one!\r\n");
#endif
if((USBSTA & (1<<SPEED)) &&(USBSTA & (1<<SPEED))){
// fullspeed
#if DEBUG
core.stdout("FS\r\n");
#endif
} else {
//lowspeed
#if DEBUG
core.stdout("LS\r\n");
#endif
// mark device as low speed
}
//UHCON = (1<<SOFEN); /* host generate for FS SOF, and for LS keep-alive! */
//UHCON = (1<<RESET);
// SOF on etx
device_on_downstream = 1;
//device_on_downstream = usb_add_device();
//UHINT &= ~(1<<DCONNI);
}
else {
// wenn geraet nicht aktiviert ist das immer aufrufen!
//USART_WriteHex(0x55);
}
}
}
UHINT = 0x00;
/* Usb_disable */
USBCON &= ~(1<<USBE);
/* Usb_enable */
USBCON |= (1<<USBE);
/* unfreeze clock */
UsbEnableClock();
/* usb attach */
UDCON &= ~(1<<DETACH);
/* select host */
USBCON |= (1<<HOST);
/* disable vbus hw control */
OTGCON |= (1<<VBUSHWC);
/* enable vbus */
OTGCON |= (1<<VBUSREQ);
}
